/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.consensus.common.request;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

/**
 * only used for iot consensus.
 */
public class IndexedConsensusRequest implements IConsensusRequest {

    /**
     * we do not need to serialize these two fields as they are useless in other nodes.
     */
    private final long searchIndex;

    private final long syncIndex;
    private final List<IConsensusRequest> requests;
    private final List<ByteBuffer> serializedRequests = new ArrayList<>();
    private long serializedSize = 0;

    public IndexedConsensusRequest(long searchIndex, List<IConsensusRequest> requests) {
        this.searchIndex = searchIndex;
        this.requests = requests;
        this.syncIndex = -1L;
        this.requests.forEach(
                r -> {
                    ByteBuffer buffer = r.serializeToByteBuffer();
                    this.serializedRequests.add(buffer);
                    this.serializedSize += buffer.capacity();
                });
    }

    public IndexedConsensusRequest(
            long searchIndex, long syncIndex, List<IConsensusRequest> requests) {
        this.searchIndex = searchIndex;
        this.requests = requests;
        this.syncIndex = syncIndex;
    }

    @Override
    public ByteBuffer serializeToByteBuffer() {
        throw new UnsupportedOperationException();
    }

    public List<IConsensusRequest> getRequests() {
        return requests;
    }

    public List<ByteBuffer> getSerializedRequests() {
        return serializedRequests;
    }

    public long getSerializedSize() {
        return serializedSize;
    }

    public long getSearchIndex() {
        return searchIndex;
    }

    public long getSyncIndex() {
        return syncIndex;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        IndexedConsensusRequest that = (IndexedConsensusRequest) o;
        return searchIndex == that.searchIndex && requests.equals(that.requests);
    }

    @Override
    public int hashCode() {
        return Objects.hash(searchIndex, requests);
    }
}
